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Hsieh, Yikai
Research Institute for Sustainable Senior Lecturer/ Junior Associate Professor
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Last Updated :2026/08/20
Basic Information
Affiliated programs (koza)
Email Address
Email Address
hsieh.yikai.6a
kyoto-u.ac.jp
Professional Memberships
- From Apr. 2015, To PresentAmerican Geophysical Union
- From Apr. 2015, To PresentJAPAN GEOSCIENCE UNION
- From Apr. 2015, To PresentSOCIETY OF GEOMAGNETISM AND EARTH, PLANETARY AND SPACE SCIENCES
Academic Degree
Academic Resume (Graduate Schools)
Academic Resume (Undergraduate School/Majors)
Research History
- From Sep. 2023, To PresentKyoto University, Research Institute for Sustainable Humanosphere Core Research Divisions Division of Creative Research and Development of Humanosphere Laboratory of Computer Simulations for Humanosphe, Junior Associate Professor
- From Apr. 2021, To Aug. 2023Kyoto University, Research Institute for Sustainable Humanosphere, 特定研究員, 特任助教
- From Apr. 2018, To Mar. 2021Kyoto University, Research Institute for Sustainable Humanosphere, 特定研究員
Language of Instruction
ID,URL
ORCID ID
J-Global ID
researchmap URL
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Last Updated :2026/08/20
Research
Research Interests
Research Areas
Papers
- Cold proton nonresonant response to EMIC waves: MMS observations and a hybrid simulationHuayue Chen; Xueyi Wang; Lunjin Chen; Chih-Ping Wang; Xiaolei Li; Yu Lin; Hong Zhao; Yoshiharu Omura; Yi-Kai Hsieh; Xinmin Li; Levon A. Avanov; Hanying Wei; Narges AhmadiEarth, Planets and Space, 16 Jan. 2026, Peer-reviewed
- Simulation Study of Chorus Wave Modulation and Associated Electron PrecipitationHuayue Chen; Xueyi Wang; Rui Chen; Lunjin Chen; Yoshiharu Omura; Yoshizumi Miyoshi; Xiaolei Li; Yi‐Kai HsiehGeophysical Research Letters, 16 Oct. 2025, Peer-reviewed
- Quantifying Electron Precipitation Driven by Chorus Waves Using Self‐Consistent Particle‐In‐Cell SimulationsHuayue Chen; Xueyi Wang; Xiaolei Li; Rui Chen; Lunjin Chen; Yoshiharu Omura; Yi‐Kai Hsieh; Yu Lin; M. L. AdrianGeophysical Research Letters, 13 Oct. 2025, Peer-reviewed
- Exploring Outer Radiation Belt Losses From the International Space StationXJ Zhang; A Artemyev; Y Katoh; Y Hsieh; V Angelopoulos; S Torii; R Kataoka; Y Akaike; S NakahiraGeophysical Research Letters, Jul. 2025, Peer-reviewed
- Nonlinear Proton Dynamics in the Formation of Rising-Tone EMIC Wave SubpacketsHuayue Chen; Xueyi Wang; Yu Lin; Hong Zhao; Chih-Ping Wang; Xinmin Li; Shujie Gu; Yoshiharu Omura; Lunjin Chen; Xiaolei Li; Yi-Kai HsiehGeophysical Research Letters, May 2025, Peer-reviewed
- Electron Dynamics Associated With Advection and Diffusion in Self-Consistent Wave-Particle Interactions With Oblique Chorus WavesChen, H.; Wang, X.; Zhao, H.; Lin, Y.; Chen, L.; Omura, Y.; Chen Rui; Hsieh, Y.‐K.Geophysical Research Letters, 28 Jul. 2024, Peer-reviewed
- Particle Acceleration in Jupiter's Ion Radiation Belts by Nonlinear Wave TrappingTomohiro Sekine; Yoshiharu Omura; Danny Summers; Yi‐Kai Hsieh; Satoko NakamuraJournal of Geophysical Research: Space Physics, 29 Jun. 2024, Peer-reviewed
- Nonlinear Electron Trapping Through Cyclotron Resonance in the Formation of Chorus SubpacketsHuayue Chen; Xueyi Wang; Lunjin Chen; Xiao‐Jia Zhang; Yoshiharu Omura; Rui Chen; Yi‐Kai Hsieh; Yu Lin; Zhiyang XiaGeophysical Research Letters, 16 Jun. 2024, Peer-reviewed
- Resonant Electron Signatures in the Formation of Chorus Wave SubpacketsXueyi Wang; Huayue Chen; Yoshiharu Omura; Yi‐Kai Hsieh; Lunjin Chen; Yu Lin; Xiao‐Jia Zhang; Zhiyang XiaGeophysical Research Letters, 28 Apr. 2024, Peer-reviewed
- Precipitation Rates of Electrons Interacting With Lower‐Band Chorus Emissions in the Inner MagnetosphereYikai Hsieh; Yoshiharu OmuraJournal of Geophysical Research: Space Physics, 26 Jun. 2023, Peer-reviewed, Lead author, Last author, Corresponding author
- A Systematic Study in Characteristics of Lower Band Rising-Tone Chorus ElementsJih-Hong Shue, Yasuhiro Nariyuki, Yuto Katoh, Shinji Saito, Yoshiya Kasahara, Yi-Kai Hsieh, Shoya Matsuda, Yoshitaka GotoJournal of Geophysical Research: Space Physics, Nov. 2019, Peer-reviewed
- Cyclotron Acceleration of Relativistic Electrons Through Landau Resonance With Obliquely Propagating Whistler‐Mode Chorus EmissionsYoshiharu Omura; Yi‐Kai Hsieh; John C. Foster; Philip J. Erickson; Craig A. Kletzing; Daniel N. BakerJournal of Geophysical Research: Space Physics, 24 Apr. 2019, Peer-reviewed
- A meteor shockwave event recorded at seismic and infrasound stations in northern TaiwanUtpal Kumar; Benjamin F. Chao; Yikai Hsieh; Emmy T. Y. ChangGeoscience Letters, 23 May 2017, Peer-reviewed
- Nonlinear dynamics of electrons interacting with oblique whistler mode chorus in the magnetosphereHsieh, Yi-Kai; Omura, YoshiharuJournal of Geophysical Research: Space Physics, 30 Jan. 2017, Peer-reviewed, Lead author, Last author, Corresponding author
- The Earth's free core nutation: Formulation of dynamics and estimation of eigenperiod from the very-long-baseline interferometry dataB.F. Chao; Y. HsiehEarth and Planetary Science Letters, Dec. 2015, Peer-reviewed
- Local time distributions of repetition periods for rising tone lower band chorus waves in the magnetosphereJih‐Hong Shue; Yi‐Kai Hsieh; Sunny W. Y. Tam; Kaiti Wang; Hui Shan Fu; Jacob Bortnik; Xin Tao; Wen‐Chieh Hsieh; Gilbert PiGeophysical Research Letters, 25 Oct. 2015, Peer-reviewed
- Earth's rotation variations: a wavelet analysisBenjamin F. Chao; WeiYung Chung; ZongRong Shih; YiKai HsiehTerra Nova, 05 Feb. 2014, Peer-reviewed
Presentations
- Green’s function method on dynamics of radiation belt electrons via nonlinear interactions with chorus emissions and EMIC wavesYikai HsiehCOSPAR 2024, 19 Jul. 2024, Invited
- Acceleration and Loss Processes of Radiation Belt Electrons Via Nonlinear Interactions with Whistler-mode Chorus EmissionsYikai HsiehAsia Oceania Geosciences Society (AOGS) 21st Annual Meeting, 27 Jun. 2024, Invited
- Variations of energetic electrons via nonlinear interactions with lower-band chorus emissions around the Earth’s outer radiation belt,Yikai HsiehJapan Geoscience Union (JpGU) Meeting 2024, 26 May 2024
- Energetic Electron Precipitation induced by lower-band chorus emissionsYikai HsiehThe 7th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2023), 13 Nov. 2023, Invited
- Pitch angle scattering rates and energetic electron precipitation caused by chorus emissions in the inner magnetosphereYikai HsiehSociety of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS) Fall Meeting 2023, 27 Sep. 2023
- Electron scattering and precipitation due to oblique chorus emissionsYikai HsiehJoint Workshop of "Physics and application of whistler waves” and “Future perspective of study on nonlinear wave-particle interaction”, 16 Mar. 2023, Invited
- Electron precipitation rates due to nonlinear effects of parallel and oblique whistler mode waves in the Earth’s inner magnetic fieldYikai HsiehAmerican Geophysical Union (AGU) 2022 Fall Meeting, 15 Dec. 2022
- Energetic electron precipitation associated with nonlinear wave-particle interactions between electrons and very oblique chorus wavesYikai Hsieh; Yoshiharu OmuraThe 10th VLF/ELF Remote Sensing of Ionospheres and Magnetospheres Workshop (VERSIM 2022), 11 Nov. 2022
- Comparison of Energetic Electron Precipitation Induced by Parallel and Oblique Whistler Mode Chorus WavesYikai Hsieh; Yoshiharu OmuraAsia Oceania Geosciences Society (AOGS) 19th Annual Meeting, 03 Aug. 2022
- Precipitation of resonant electrons interacting with parallel and oblique whistler mode chorus wavesYikai Hsieh; Yoshiharu OmuraAT-AP-RASC 2022, 03 Jun. 2022
- Energetic electron loss process associating with oblique chorus emissions in the outer radiation beltYikai Hsieh; Yoshiharu OmuraEGU General Assembly 2022, 26 May 2022
- Precipitation rates of energetic electrons interacting with parallel and oblique whistler mode chorus emissions in the magnetosphereYikai Hsieh; Yoshiharu OmuraJapan Geoscience Union (JpGU) Meeting 2022, 25 May 2022
- Role of nonlinear WPI in energetic electron precipitation by oblique chorus emissions in the outer radiation belt謝 怡凱; 大村善治第150回 地球電磁気・地球惑星圏学会 総会・講演会, 01 Nov. 2021
- Modeling of energetic electron precipitation affected by oblique whistler mode chorus emissions in the outer radiation beltYikai Hsieh; Yoshiharu OmuraThe XXXIV General Assembly and Scientific Symposium (GASS) of the International Union of Radio Science (URSI), 31 Aug. 2021
- Energetic electron fluxes and precipitation at outer radiation belt associated with localized oblique whistler mode chorus emissionsYikai Hsieh; Yoshiharu OmuraAsia Oceania Geosciences Society (AOGS) 18th Annual Meeting, 04 Aug. 2021, Invited
- Modeling of outer radiation belt electron dynamics associated with whistler mode chorus emissions via Green’s function method謝 怡凱; 大村善治日本地球惑星科学連合2021年大会, 05 Jun. 2021
- Energetic electron precipitation via oblique whistler mode chorus emissions in the outer radiation beltYikai Hsieh; Yoshiharu OmuraEGU General Assembly 2021, 29 Apr. 2021
- Modeling of energetic electron fluxes interacting with whistler mode chorus emissions in the Earth’s outer radiation belt謝 怡凱Space-Sun-Earthランチセミナー, 18 Dec. 2020
- Green's function of electron flux in the outer radiation belt interacting with localized oblique whistler mode chorus emissionsYikai Hsieh; Yoshiharu OmuraSociety of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS) Fall Meeting, 02 Nov. 2020
- Dynamics of Relativistic Electrons Interacting With Whistler Mode Chorus Emissions in the Outer Radiation BeltYikai Hsieh; Yuko Kubota; Yoshiharu Omura第146回 地球電磁気･地球惑星圏学会 総会・講演会, 26 Oct. 2019
- Nonlinear Damping of Oblique Whistler Mode Waves Via Landau ResonanceYikai Hsieh; Yoshiharu OmuraJapan Geoscience Union Meeting 2019, 29 May 2019
- Nonlinear wave damping of slightly oblique whistler mode waves by Landau resonanceYikai Hsieh; Yoshiharu OmuraAsia Oceania Geosciences Society (AOGS) 15th Annual Meeting, 04 Jun. 2018
- Stationary wave condition of oblique whistler mode waves regarding Landau resonanceYikai Hsieh; Yoshiharu Omura日本地球惑星科学連合2018年大会, 22 May 2018
- Nonlinear damping of oblique whistler mode waves through Landau resonanceYikai Hsieh; Yoshiharu OmuraAmerican Geophysical Union (AGU) 2017 Fall Meeting, 15 Dec. 2017
Awards
- 25 Nov. 2025Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS), Obayashi Early Career Scientist Awardテスト粒子計算による斜め伝搬ホイッスラーモードコーラスと放射線帯電子の相互作用の研究, Japan society謝 怡凱
- 29 Aug. 2022International Union of Radio Science (URSI), URSI GASS 2021 Young Scientist AwardInternational societyYikai Hsieh
- 11 Nov. 2022The 10th VLF/ELF Remote Sensing of the Ionosphere and Magnetosphere (VERSIM) workshop, Outstanding Presentation Awards for Early Career ScientistsInternational societyYikai Hsieh
list
Last Updated :2026/08/20
Education
Teaching subject(s)
- From 01 Apr. 2026, To 31 Mar. 2027Computer Simulation of ElectrodynamicsC611, Spring, Graduate School of Engineering, 2
- From 01 Apr. 2026, To 31 Mar. 2027Practice of Electrical and Electronic Engineering6201, Spring, Faculty of Engineering, 2
- From 01 Apr. 2026, To 31 Mar. 2027Introduction to humanosphere science IY203, Spring, Institute for Liberal Arts and Sciences, 2
- From 01 Apr. 2026, To 31 Mar. 2027Computational Methods and Exercise in Electrical and Electronic Engineering6080, Fall, Faculty of Engineering, 3
- From 01 Apr. 2025, To 31 Mar. 2026Computer Simulation of ElectrodynamicsC611, Spring, Graduate School of Engineering, 2
- From 01 Apr. 2025, To 31 Mar. 2026Practice of Electrical and Electronic Engineering6201, Spring, Faculty of Engineering, 2
- From 01 Apr. 2025, To 31 Mar. 2026Computational Methods and Exercise in Electrical and Electronic Engineering6080, Fall, Faculty of Engineering, 3
- From 01 Apr. 2024, To 31 Mar. 2025Computer Simulation of ElectrodynamicsC611, Spring, Graduate School of Engineering, 2
- From 01 Apr. 2024, To 31 Mar. 2025Practice of Electrical and Electronic Engineering6201, Spring, Faculty of Engineering, 2
- From 01 Apr. 2024, To 31 Mar. 2025Computational Methods and Exercise in Electrical and Electronic Engineering6080, Fall, Faculty of Engineering, 3
